Elevated blood b12 levels and supplementation
My husband started taking sub-lingual methylcobalamin (1000 mcg/day) about a year and a half ago, per my recommendation. We had no idea if his levels were low,but I wanted him to take it to help his cognitive ability as he gets older (he was 53 when he started taking it). Several months later at his yearly physical, his doctor ordered a B12 blood test with his other blood work.
His level was elevated at 1179. We continued him on the B12 and this year, his level is 1518, which is much higher than last year. I have done a little research and am concerned about what this could mean, but his other blood work is normal. Is it possible the elevated level is due to the supplementation or should we look at other testing for liver/kidney/blood problem?